Commands ionic state restore

Hello everyone,

I have a question about ionic.

I have upgraded ionic 2 vers ionic 3,
I would like to know if we can return to ionic 2 by doing an upgrade?

I also read that the command

$ ionic state restore

Is no longer supported for ionic 3
And therefore we must use the command of cordova

I need to use

$cordova prepare

That’s right?

And at the command level by chronology, is that right?

$ cordova platform add ios
$ cordova build
$ cordova prepare

thanks you